A developer is building a custom service that looks up currency exchange rates. The rates are stored in a table and change only once per day. The service is called by multiple users across different sessions, and each call currently queries the database. The developer wants to reduce database round trips while ensuring users see updated rates within 10 minutes of a change. What should the developer implement?

Use a temporary table in the calling session to store the rates and refresh it on each service call

Set the currency rate table's CacheLookup property to EntireTable and rely on the AOS cache to refresh automatically

Create a singleton class that queries the database once and stores the rates in a static variable for the lifetime of the AOS process

Use the AppGlobalCache class to store the rates with a 10-minute expiration and refresh the cache when the table is updated

A developer is designing a batch process that reads from a large table and writes summary data to a separate table. The process is currently single-threaded and takes 2 hours to complete. The developer wants to improve throughput by allowing multiple threads to process different ranges of the source table concurrently. What should the developer do?

Split the source table into ranges based on a numeric key and run multiple batch tasks, each processing a distinct range

Change the CacheLookup property of the source table to EntireTable to speed up reads

Use a single batch task but increase the query batch size to 10,000 to speed up the read

Use a temporary table to stage the source data and then process it in a single loop

Which of the following is an example of optimizing variable scope in X++?

Declaring all variables at the top of the method

Using global variables for all data

Declaring a variable inside a loop instead of at the method level

Using class-level variables for temporary values

Microsoft Certified:Dynamics 365 Finance and Operations Apps Developer Associate

Domain 7Objective 2

Apply Fundamental Performance Optimization Techniques MB-500 Practice Questions (Page 7)

Part of the Implement security and optimize performance domain, which accounts for 10–15% of the MB-500 exam. Microsoft does not publish an official question count, but from its 100-minute exam (~40–65 total, ~4–10 in this domain), expect 1–3 from this objective — we provide 47 practice questions to prepare you well beyond it. (estimate)

47questions here

10free pages

12concepts

10–15%of the exam

Questions 31–35

31application · medium
A developer is building a custom service that looks up currency exchange rates. The rates are stored in a table and change only once per day. The service is called by multiple users across different sessions, and each call currently queries the database. The developer wants to reduce database round trips while ensuring users see updated rates within 10 minutes of a change. What should the developer implement?
Select an answer first
32foundation · easy
Which property on a table in Dynamics 365 Finance and Operations determines the caching behavior for records of that table?
Select an answer first
33application · medium
A developer is designing a batch process that reads from a large table and writes summary data to a separate table. The process is currently single-threaded and takes 2 hours to complete. The developer wants to improve throughput by allowing multiple threads to process different ranges of the source table concurrently. What should the developer do?
Select an answer first
34foundation · easy
Which of the following is an example of optimizing variable scope in X++?
Select an answer first
35foundation · easy
In Dynamics 365 Finance and Operations, which class provides a global cache that can store data across sessions and is accessible from any code running in the same environment?
Select an answer first

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Apply Fundamental Performance Optimization Techniques MB-500 Practice Questions (Page 7)

Questions 31–35

Which property on a table in Dynamics 365 Finance and Operations determines the caching behavior for records of that table?

Which of the following is an example of optimizing variable scope in X++?

In Dynamics 365 Finance and Operations, which class provides a global cache that can store data across sessions and is accessible from any code running in the same environment?

Keep studying — Implement security and optimize performance